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[14:37:34 INFO] [velocityrcon]: Rcon connection from [/192.168.1.144:55664]
[14:37:36 WARN] [io.netty.channel.DefaultChannelPipeline]: An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
java.lang.NoSuchMethodError: 'boolean com.velocitypowered.api.command.CommandManager.execute(com.velocitypowered.api.command.CommandSource, java.lang.String)'
at me.uniodex.velocityrcon.server.RconHandler.handleCommand(RconHandler.java:86) ~[?:?]
at me.uniodex.velocityrcon.server.RconHandler.channelRead0(RconHandler.java:61) ~[?:?]
at me.uniodex.velocityrcon.server.RconHandler.channelRead0(RconHandler.java:15) ~[?:?]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99) ~[server.jar:3.0.0]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[server.jar:3.0.0]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[server.jar:3.0.0]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[server.jar:3.0.0]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) ~[server.jar:3.0.0]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296) ~[server.jar:3.0.0]
at io.netty.handler.codec.ByteToMessageCodec.channelRead(ByteToMessageCodec.java:103) ~[server.jar:3.0.0]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[server.jar:3.0.0]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[server.jar:3.0.0]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[server.jar:3.0.0]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) ~[server.jar:3.0.0]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[server.jar:3.0.0]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[server.jar:3.0.0]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) ~[server.jar:3.0.0]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) ~[server.jar:3.0.0]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719) ~[server.jar:3.0.0]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655) ~[server.jar:3.0.0]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581) ~[server.jar:3.0.0]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) ~[server.jar:3.0.0]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) ~[server.jar:3.0.0]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[server.jar:3.0.0]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[server.jar:3.0.0]
at java.lang.Thread.run(Unknown Source) [?:?]

https://velocitypowered.com/wiki/developers/porting-from-velocity-1/

https://pastebin.com/jtrebYCp

Velocity 3.1.1-98
Java 17.0.1 2021-10-19 LTS
Oracle-Linux-7.9-aarch64-2021.09.23-0

In addition to this problem, there's no way to specify the listening address, velocityrcon just listens to 0.0.0.0, which is a security risk if users desire to only allow local connections.

Hi.I have found a problem when I use mcrcon to connect velocity.
I have tried on the vanilla server and I'm pretty sure it is effective.
But when I use command "glist all" and "lpv help".The command line is not responding.I take a screen shot and the pictures are below.

The Vanilla Server:

Velocity:

So,I use wireshark to capture and analyze packets.And I find this.

It sent back my instructions verbatim!
So,what happened?